Manufacture of pulp and paper from garbage.



JEAN FRANCOIS rur'mnar AND HENRY F. J. PUTTAERT, OF SAN FRANCISCO,CALIFORNIA.

MANUFACTURE OF PULP AND PAPER FROM GARBAGE.

N 0 Drawing.

To all whom it may concern:

Be it known that we, JEAN FRANCOIS PUT- TAERT and HENRY FRANCIS JOSEPHPUT- TAERT, subjects of the King of Belgium, residing at the city andcounty of San Fran cisco and State of California, have invented new anduseful Improvements in Manufacture of Pulp and Paper from Garbage, ofwhich the following is a specification.

Our invention relates to the manipulation of garbage in such a manner asto separate it into various useful compounds after deodorizing it.

It consists particularly in the preparation of a pulp which 'mayafterward be converted into cardboard, binder board roofing papers, feltdred useful forms.

The garbage being first collected, all hard substances, such as stones,glass, iron, tin cans, bones, and the like, are separated and removed.The remaining material is then passed through suitable crushingmachinery and reduced to a coarse pulp which may contain as much asfifty per cent., more or less, of moisture. The stock thus produced ispassed through a press anda considerable proportion of the moisture 1sextracted. From this extract by suitable processes, useful oils orgreases can be extracted. The solid residue may retain from ten totwenty per cent. of moisture, or suflicient to'enable it to be furtherworked.

This pulp is, then placed in suitable boilers with any desired alkalineor other reagents, and is then boiled until thoroughly deodorized anddeprived of remaining Specification of Letters Patent.

papers, and generally into kin-' Patented Feb. 11, 1919.

Application filed December 12, 1916. Serial No. 136,446.

grease and undesirable substances. It is then thoroughly washed andbleached and is transferred to a beating or like engine, in which it isreduced to a clean fibrous pulp, which by subsequent proper manipulationmay be transformed into card, hinder, or roofing boards, or likestructures for kindred uses.

This is all eflected Without smoke, smell or gases of any kind.'

7 Having thus described our invention, what we claim and desire tosecure by Letters Patent is- 1. The process of reduction and prepara-'tion of garbage, consisting in first removing all deleterious hardsubstances, then crushing the resulting mass, expressing a'proportion'of moisture, boiling the residue with suitable alkalinereagents, and form ing a fibrous pulp.

2. The process of manufacturing cardboard and the like from garbage,consisting in first removing deleterious hard substances, crushing andremoving a percentage of moisture from the remainder, boiling theresultant mass with an alkaline reagent, washing and bleaching andreducing to a fibrous pulp, and finally converting said pulp into drysheets.

In testimony whereof we have hereunto set our hands in the presence oftwo subscribing witnesses.

JEAN FRANCOIS PUTTAERT.

HENRY F. J. PUTTAERT. lVitnesses JOHN H. HERRING, \V. W. HEALEY.

